[Levels of S100β protein in patients with mild traumamic brain injury].

The prospective study of plasma S100β protein levels in 19 patients with mild traumamic brain injury treated with conservative methods was carried out. The S100β protein levels were measured on the admission of the patient and after 24 and 48 h. The level of S100β increased above normal values (>0,105 mkg/l) in 11 patients (58%) in the first 6 h after the trauma. The CT analysis revealed brain matter lesions in 8 patients (42%), MRI - in 11 (58%) cases. The increase of baseline S100β levels above normal values was found in all patients with brain matter lesions seen in CT and in 27% of patients with the normal CT. CT revealed brain lesions in 73% and MRI in 100% of patients with mild traumamic brain injury and increased plasma S100β levels. There was no correlation between the S100β level and the type of brain lesion, its localization or volume and the fracture of cranial bones. Also, no correlation was found between S100β levels and EEG changes (p>0,05).